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MSI GS70 2PE-026CN Replacement Battery 11.4V 5400mAh BTY-L76

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From $113.99 USD $136.99
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Fits MSI GS70 2PE-026CN and ten related GS70 models; replaces OEM battery part number BTY-L76.
11.4V 5400mAh Li-Polymer chemistry delivers 61.56Wh to restore full charge cycles on this gaming notebook.
Connector seats vertically into the GS70 chassis slot with a single push-tab locking mechanism on the right side.
We bench-tested this cell against the stock BTY-L76 — BMS accepted input voltage cleanly, discharged at steady 11.1V under load without cutoff oscillation.
After installation, run one full discharge to hibernate cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

11.4V

Amp

5400mAh

MSI GS70 Stealth Pro Series — 11.4V Li-Polymer Replacement Battery (BTY-L76)

This is an 11.4V 5400mAh (61.56Wh) Li-Polymer replacement for the BTY-L76 battery. It fits the MSI GS70 Stealth Pro gaming notebook line, including the 2PE, 2QE, 2QD, and 2PC variants. Swap it in when the original cell no longer holds charge under gaming or high-load use.

  • GS70 series compatibility: All GS70 variants on the BTY-L76 platform share the same 11.4V three-cell configuration, connector pinout, and BMS handshake protocol. The same cell works across 2PE, 2QE, 2QD, and 2PC boards without modification.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a GS70 board. The BMS communicated correctly, charge termination triggered at the right voltage, and the protection circuit responded normally to load spikes from the GPU.
  • First-cycle reset after install: After fitting the new cell, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This clears the BIOS battery learn cycle data carried over from the old cell and removes the inaccurate health warning that appears after every cell swap.

Why the GS70 shuts down at 20–30% shown after a battery swap

The GS70's fuel gauge IC calibrates its empty-cell voltage threshold against the old battery's internal resistance profile. With a new cell, that threshold no longer matches actual chemistry behaviour. Under combined CPU and GPU load, the new cell's voltage drops faster than the IC expects, triggering a shutdown before the display percentage reaches zero. Running two full discharge-to-hibernate and charge-to-100% cycles recalibrates the IC against the new cell's actual voltage curve. After calibration, the shutdown threshold realigns and the gauge tracks correctly.

BIOS showing 0% or "unknown" battery immediately after fitting the new cell

The BIOS reads battery identity and health data from the cell's EEPROM, not from a live voltage measurement. When a replacement cell arrives, its EEPROM data does not match the wear history the BIOS logged for the original pack. This mismatch causes the system to report 0%, "consider replacing," or "unknown" on first boot. Boot into BIOS, let the battery reach at least 11.7V under charge, then run a full battery learn cycle from the EC firmware. The warning clears once the controller writes fresh baseline data to match the new cell.

Compatible Models

GS70 2PE-026CN GS70 2QE-084CN GS70 2QD-487CN GS70 2PC-633XCN 2PE-025CN 2QE-083CN WS72 GS72 GS70 MS-1771 GS70 MS-1772 GS70 MS-1774

Replaces Part Numbers

BTY-L76

Technical Specifications

Voltage11.4V
Amp Hours5400mAh
Capacity5400mAh
Rate61.56Wh
Net Weight271.8g /9.59 oz
Gross Weight531.8g /18.76 oz
Approximate Weight531.8g /18.76 oz
Dimension 253.73 x 120.50 x 7.90mm

Product Highlights

  • Brand: MSI
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My GS70 fuel gauge is jumping around — showing 60% one minute then 35% the next after I installed the new battery. Is the cell faulty?

The fuel gauge IC on the GS70 uses historical charge data from the old cell to estimate remaining capacity. With a new cell loaded, that reference data is wrong, so the gauge reads erratically for the first few cycles. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%. After two complete cycles the IC recalibrates against the new cell's voltage curve and the readings stabilise.

Windows is showing the new battery's capacity as lower than 61.56Wh in the system report. Why doesn't the Wh figure match?

The Wh figure Windows pulls comes from the EEPROM data embedded in the battery's protection circuit, which stores the manufacturer's rated design capacity. The actual usable energy the cell delivers depends on the EC's current charge limit and cell chemistry variance — these rarely match the rated figure exactly. A discrepancy of 3–8% between reported and rated Wh is normal and does not indicate a fault. Check the actual charge level at 100% in HWiNFO64; if the full-charge capacity reads 58Wh or above, the cell is performing within spec.

The new BTY-L76 stopped charging at 80% and won't go higher. The laptop isn't plugged into a docking station — just the standard charger.

MSI's EC firmware on several GS70 BIOS revisions includes a charge limit that caps the cell at 80% to reduce long-term cell stress. This is a BIOS-controlled setting, not a fault with the replacement cell. Enter the MSI Dragon Center application or the BIOS power settings and check whether "Battery Calibration Mode" or a charge threshold option is active. Disable the charge limit or set the threshold to 100%, then reconnect the charger — charging will resume past 80% immediately.

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